/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.0-0f64333
[2020-10-29 05:18:05,038 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 05:18:05,041 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 05:18:05,093 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 05:18:05,094 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 05:18:05,100 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 05:18:05,102 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 05:18:05,107 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 05:18:05,111 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 05:18:05,117 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 05:18:05,119 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 05:18:05,120 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 05:18:05,120 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 05:18:05,124 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 05:18:05,127 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 05:18:05,129 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 05:18:05,130 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 05:18:05,134 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 05:18:05,141 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 05:18:05,158 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 05:18:05,160 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 05:18:05,163 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 05:18:05,164 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 05:18:05,167 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 05:18:05,176 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 05:18:05,176 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 05:18:05,177 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 05:18:05,179 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 05:18:05,180 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 05:18:05,181 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 05:18:05,181 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 05:18:05,182 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 05:18:05,182 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 05:18:05,186 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 05:18:05,188 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 05:18:05,188 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 05:18:05,189 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 05:18:05,189 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 05:18:05,189 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 05:18:05,190 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 05:18:05,191 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 05:18:05,192 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-29 05:18:05,219 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 05:18:05,219 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 05:18:05,221 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 05:18:05,221 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 05:18:05,221 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 05:18:05,221 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 05:18:05,222 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 05:18:05,222 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 05:18:05,222 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 05:18:05,222 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 05:18:05,222 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 05:18:05,223 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 05:18:05,223 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 05:18:05,223 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 05:18:05,223 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 05:18:05,223 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 05:18:05,224 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 05:18:05,224 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 05:18:05,224 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 05:18:05,224 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 05:18:05,224 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 05:18:05,225 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:18:05,225 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 05:18:05,225 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 05:18:05,225 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 05:18:05,225 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 05:18:05,226 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 05:18:05,226 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 05:18:05,226 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 05:18:05,226 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 05:18:05,598 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 05:18:05,642 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 05:18:05,646 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 05:18:05,647 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 05:18:05,648 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 05:18:05,649 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-29 05:18:05,735 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c3b5a09/a7fedf4865364b02aa2ab35b434aa688/FLAGc8d86be7a
[2020-10-29 05:18:07,098 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 05:18:07,099 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label00.c
[2020-10-29 05:18:07,146 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c3b5a09/a7fedf4865364b02aa2ab35b434aa688/FLAGc8d86be7a
[2020-10-29 05:18:07,281 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c3b5a09/a7fedf4865364b02aa2ab35b434aa688
[2020-10-29 05:18:07,286 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 05:18:07,295 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 05:18:07,299 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 05:18:07,300 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 05:18:07,304 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 05:18:07,306 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:07" (1/1) ...
[2020-10-29 05:18:07,310 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d694769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:07, skipping insertion in model container
[2020-10-29 05:18:07,311 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:18:07" (1/1) ...
[2020-10-29 05:18:07,320 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 05:18:07,550 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 05:18:09,906 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:18:09,925 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 05:18:11,052 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:18:11,133 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 05:18:11,134 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11 WrapperNode
[2020-10-29 05:18:11,134 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 05:18:11,135 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 05:18:11,136 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 05:18:11,136 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 05:18:11,153 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,155 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,281 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,282 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,627 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,686 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,766 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
[2020-10-29 05:18:11,859 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 05:18:11,860 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 05:18:11,860 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 05:18:11,860 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 05:18:11,861 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:18:11,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 05:18:11,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 05:18:11,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 05:18:11,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-29 05:18:11,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-29 05:18:11,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 05:18:11,950 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 05:18:11,950 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 05:18:11,950 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-29 05:18:11,951 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 05:18:11,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 05:18:11,953 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 05:18:11,953 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 05:18:11,953 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 05:18:11,953 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 05:18:11,953 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 05:18:21,767 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 05:18:21,768 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 05:18:21,775 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:21 BoogieIcfgContainer
[2020-10-29 05:18:21,775 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 05:18:21,782 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 05:18:21,782 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 05:18:21,786 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 05:18:21,787 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:18:07" (1/3) ...
[2020-10-29 05:18:21,788 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cbd29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:21, skipping insertion in model container
[2020-10-29 05:18:21,789 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:18:11" (2/3) ...
[2020-10-29 05:18:21,789 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cbd29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:18:21, skipping insertion in model container
[2020-10-29 05:18:21,789 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:18:21" (3/3) ...
[2020-10-29 05:18:21,791 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label00.c
[2020-10-29 05:18:21,806 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 05:18:21,813 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 05:18:21,829 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 05:18:21,885 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 05:18:21,885 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 05:18:21,885 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 05:18:21,885 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 05:18:21,885 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 05:18:21,885 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 05:18:21,886 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 05:18:21,886 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 05:18:21,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-29 05:18:22,086 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1654
[2020-10-29 05:18:22,086 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:18:22,089 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:18:22,089 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:18:22,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:18:22,097 INFO  L82        PathProgramCache]: Analyzing trace with hash -1102237815, now seen corresponding path program 1 times
[2020-10-29 05:18:22,107 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:18:22,107 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520518612]
[2020-10-29 05:18:22,108 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:18:23,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:18:23,710 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:18:28,479 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:18:28,480 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1677
[2020-10-29 05:18:28,480 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:18:28,481 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5259
[2020-10-29 05:18:28,483 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:18:28,483 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:18:28,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-29 05:18:28,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:18:28,484 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1668
[2020-10-29 05:18:28,484 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 05:18:30,317 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:18:30,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:18:30,340 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:18:30,370 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:18:30,370 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:18:30,371 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:18:30,371 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-10-29 05:18:30,372 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:18:30,372 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:18:30,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:18:30,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:18:30,373 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:18:30,373 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:18:32,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:18:32,715 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520518612]
[2020-10-29 05:18:32,717 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 05:18:32,717 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 05:18:32,718 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919961194]
[2020-10-29 05:18:32,728 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 05:18:32,729 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:18:32,744 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 05:18:32,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 05:18:32,747 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-29 05:18:52,915 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:18:52,915 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-29 05:18:52,916 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:18:52,918 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1653
[2020-10-29 05:18:52,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:18:52,968 INFO  L225             Difference]: With dead ends: 6315
[2020-10-29 05:18:52,969 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-29 05:18:52,981 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:18:53,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-29 05:18:53,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-29 05:18:53,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-29 05:18:53,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-29 05:18:53,191 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1653
[2020-10-29 05:18:53,196 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:18:53,197 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-29 05:18:53,198 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 05:18:53,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-29 05:18:53,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1663
[2020-10-29 05:18:53,468 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:18:53,469 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:18:53,470 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 05:18:53,471 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:18:53,472 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:18:53,473 INFO  L82        PathProgramCache]: Analyzing trace with hash -1393795315, now seen corresponding path program 1 times
[2020-10-29 05:18:53,473 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:18:53,473 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859691674]
[2020-10-29 05:18:53,474 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:18:53,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:18:53,649 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:18:55,961 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:18:58,627 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:18:58,627 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1688
[2020-10-29 05:18:58,627 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:18:58,627 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5004
[2020-10-29 05:18:58,628 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:18:58,629 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:18:58,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:18:58,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 05:18:58,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1665
[2020-10-29 05:18:58,630 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:19:00,258 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:19:00,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:00,263 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:00,271 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:00,271 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:19:00,271 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:00,271 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-29 05:19:00,271 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:00,272 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:00,272 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:19:00,272 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:19:00,272 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:19:00,272 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:19:00,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:19:00,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:00,303 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:00,316 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:00,317 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:19:00,317 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:00,317 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-29 05:19:00,318 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:00,318 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:00,318 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:19:00,318 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:19:00,319 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-29 05:19:00,319 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:19:02,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:19:02,730 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859691674]
[2020-10-29 05:19:02,730 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:19:02,730 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 05:19:02,731 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501657419]
[2020-10-29 05:19:02,741 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-29 05:19:02,741 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:19:02,742 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-29 05:19:02,742 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-29 05:19:02,743 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 6 states.
[2020-10-29 05:19:36,854 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:19:36,855 INFO  L93              Difference]: Finished difference Result 15230 states and 24994 transitions.
[2020-10-29 05:19:36,855 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-29 05:19:36,856 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1662
[2020-10-29 05:19:36,860 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:19:36,926 INFO  L225             Difference]: With dead ends: 15230
[2020-10-29 05:19:36,927 INFO  L226             Difference]: Without dead ends: 11238
[2020-10-29 05:19:36,939 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-29 05:19:36,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11238 states.
[2020-10-29 05:19:37,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 11081.
[2020-10-29 05:19:37,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11081 states.
[2020-10-29 05:19:37,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 17678 transitions.
[2020-10-29 05:19:37,244 INFO  L78                 Accepts]: Start accepts. Automaton has 11081 states and 17678 transitions. Word has length 1662
[2020-10-29 05:19:37,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:19:37,248 INFO  L481      AbstractCegarLoop]: Abstraction has 11081 states and 17678 transitions.
[2020-10-29 05:19:37,248 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-29 05:19:37,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 11081 states and 17678 transitions.
[2020-10-29 05:19:37,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1671
[2020-10-29 05:19:37,326 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:19:37,328 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:19:37,328 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 05:19:37,328 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:19:37,329 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:19:37,330 INFO  L82        PathProgramCache]: Analyzing trace with hash 1630208265, now seen corresponding path program 1 times
[2020-10-29 05:19:37,330 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:19:37,331 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875784726]
[2020-10-29 05:19:37,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:19:37,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:37,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:37,547 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:42,562 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:42,738 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:42,738 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1698
[2020-10-29 05:19:42,739 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:19:42,739 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5269
[2020-10-29 05:19:42,739 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:42,739 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:42,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 05:19:42,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:19:42,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-10-29 05:19:42,740 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:19:43,127 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:19:43,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:43,138 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:43,148 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:43,149 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:19:43,149 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:43,149 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-29 05:19:43,149 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:43,150 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:43,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:19:43,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:19:43,150 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:19:43,150 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:19:43,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:19:43,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:43,177 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:43,191 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:43,194 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:43,195 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:19:43,195 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:19:43,195 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-29 05:19:43,195 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:43,195 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:43,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:19:43,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:19:43,196 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-29 05:19:43,196 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:19:43,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-29 05:19:43,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:43,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:43,226 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:43,226 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-29 05:19:43,226 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:43,226 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-29 05:19:43,226 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:43,227 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:19:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:19:43,227 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-10-29 05:19:43,227 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:19:44,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-10-29 05:19:44,341 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875784726]
[2020-10-29 05:19:44,342 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:19:44,342 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 05:19:44,342 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033516805]
[2020-10-29 05:19:44,347 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-29 05:19:44,347 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:19:44,348 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-29 05:19:44,350 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-10-29 05:19:44,350 INFO  L87              Difference]: Start difference. First operand 11081 states and 17678 transitions. Second operand 8 states.
[2020-10-29 05:20:13,919 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:20:13,919 INFO  L93              Difference]: Finished difference Result 32935 states and 53858 transitions.
[2020-10-29 05:20:13,925 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-29 05:20:13,925 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1670
[2020-10-29 05:20:13,925 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:20:14,050 INFO  L225             Difference]: With dead ends: 32935
[2020-10-29 05:20:14,051 INFO  L226             Difference]: Without dead ends: 21860
[2020-10-29 05:20:14,086 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2020-10-29 05:20:14,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21860 states.
[2020-10-29 05:20:14,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21860 to 21771.
[2020-10-29 05:20:14,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21771 states.
[2020-10-29 05:20:14,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21771 states to 21771 states and 33698 transitions.
[2020-10-29 05:20:14,707 INFO  L78                 Accepts]: Start accepts. Automaton has 21771 states and 33698 transitions. Word has length 1670
[2020-10-29 05:20:14,707 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:20:14,708 INFO  L481      AbstractCegarLoop]: Abstraction has 21771 states and 33698 transitions.
[2020-10-29 05:20:14,708 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-29 05:20:14,708 INFO  L276                IsEmpty]: Start isEmpty. Operand 21771 states and 33698 transitions.
[2020-10-29 05:20:14,793 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1711
[2020-10-29 05:20:14,793 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:20:14,795 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:20:14,795 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 05:20:14,795 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:20:14,796 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:20:14,797 INFO  L82        PathProgramCache]: Analyzing trace with hash -844541042, now seen corresponding path program 1 times
[2020-10-29 05:20:14,798 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:20:14,798 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904270961]
[2020-10-29 05:20:14,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:20:14,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:14,956 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:15,344 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:20,186 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1738
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5250
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:20,187 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:20:20,188 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 05:20:20,188 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-10-29 05:20:20,188 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:20,616 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:20:20,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:20,621 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:20,625 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:20,626 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:20:20,626 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:20,626 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-29 05:20:20,626 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:20,626 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:20,627 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:20:20,627 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:20,627 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:20:20,627 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:20,646 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:20:20,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:20,651 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:20,657 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:20,657 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:20:20,657 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:20,657 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-29 05:20:20,657 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:20,658 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:20,658 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:20:20,658 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:20,658 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-29 05:20:20,658 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:20,662 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-29 05:20:20,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:20,682 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:20,766 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:20,767 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-29 05:20:20,767 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:20,767 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 92
[2020-10-29 05:20:20,767 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:20,768 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:20,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:20:20,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:20:20,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-29 05:20:20,768 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:22,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-29 05:20:22,056 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904270961]
[2020-10-29 05:20:22,056 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:20:22,057 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 05:20:22,057 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37563550]
[2020-10-29 05:20:22,059 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 05:20:22,059 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:20:22,060 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 05:20:22,060 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:20:22,060 INFO  L87              Difference]: Start difference. First operand 21771 states and 33698 transitions. Second operand 7 states.
[2020-10-29 05:20:48,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:20:48,319 INFO  L93              Difference]: Finished difference Result 51650 states and 82247 transitions.
[2020-10-29 05:20:48,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-29 05:20:48,320 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1710
[2020-10-29 05:20:48,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:20:48,449 INFO  L225             Difference]: With dead ends: 51650
[2020-10-29 05:20:48,449 INFO  L226             Difference]: Without dead ends: 29885
[2020-10-29 05:20:48,504 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-29 05:20:48,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29885 states.
[2020-10-29 05:20:49,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29885 to 29455.
[2020-10-29 05:20:49,427 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29455 states.
[2020-10-29 05:20:49,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 43221 transitions.
[2020-10-29 05:20:49,520 INFO  L78                 Accepts]: Start accepts. Automaton has 29455 states and 43221 transitions. Word has length 1710
[2020-10-29 05:20:49,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:20:49,521 INFO  L481      AbstractCegarLoop]: Abstraction has 29455 states and 43221 transitions.
[2020-10-29 05:20:49,522 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 05:20:49,522 INFO  L276                IsEmpty]: Start isEmpty. Operand 29455 states and 43221 transitions.
[2020-10-29 05:20:49,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1739
[2020-10-29 05:20:49,662 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:20:49,664 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:20:49,664 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 05:20:49,664 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:20:49,665 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:20:49,666 INFO  L82        PathProgramCache]: Analyzing trace with hash -2075302153, now seen corresponding path program 1 times
[2020-10-29 05:20:49,667 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:20:49,667 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038100685]
[2020-10-29 05:20:49,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:20:49,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:49,863 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:49,936 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:50,268 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:52,109 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:54,967 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1768
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5146
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:20:54,968 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-29 05:20:54,969 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 53
[2020-10-29 05:20:54,969 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:55,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:20:55,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:55,862 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:55,867 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:55,868 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:20:55,868 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:55,868 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-29 05:20:55,868 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:55,869 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:55,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:20:55,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:55,869 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:20:55,869 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:55,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:20:55,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:55,894 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:55,899 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:55,900 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-29 05:20:55,900 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:55,900 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-29 05:20:55,900 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:55,900 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:55,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:20:55,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:55,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:20:55,901 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:55,904 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-29 05:20:55,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:55,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:55,940 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:55,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:20:55,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:55,941 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-10-29 05:20:55,941 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:55,955 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-10-29 05:20:55,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:55,976 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:56,056 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:56,056 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-29 05:20:56,056 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 87
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:20:56,057 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-29 05:20:56,058 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:57,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 120 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2020-10-29 05:20:57,551 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038100685]
[2020-10-29 05:20:57,551 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:20:57,551 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-29 05:20:57,552 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686845299]
[2020-10-29 05:20:57,553 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 05:20:57,554 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:20:57,554 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 05:20:57,554 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:20:57,554 INFO  L87              Difference]: Start difference. First operand 29455 states and 43221 transitions. Second operand 7 states.
[2020-10-29 05:21:39,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:21:39,933 INFO  L93              Difference]: Finished difference Result 102461 states and 160645 transitions.
[2020-10-29 05:21:39,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-29 05:21:39,935 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1738
[2020-10-29 05:21:39,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:21:40,245 INFO  L225             Difference]: With dead ends: 102461
[2020-10-29 05:21:40,245 INFO  L226             Difference]: Without dead ends: 73012
[2020-10-29 05:21:40,331 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 05:21:40,417 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73012 states.